chaos | 1c46cde332afed277986eaae2d50dc288ecd052735235b35962adb21202bb354

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-01-2025 13:46

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General

Target

ransomware DO NOT EXECUTE.exe
Size

248KB
MD5

fe3ac4694dfe15762f09f902f1bf5fd3
SHA1

a3ee731f0e44167c63429f776b30ed1c38204e92
SHA256

1c46cde332afed277986eaae2d50dc288ecd052735235b35962adb21202bb354
SHA512

0669f7328281de827a2bc975f174a985e6b4fbbc4b0cf599b6fea29f92d4633d6c7285049f9c52d39706282a5c1a3c34f2b1fd21e8515ef7fe2dd7a8711045ee
SSDEEP

1536:Oo2ylT90mr9xV46YE63xzqPTosYCXb2CmVjstPYDkuH:OotB90mr9xV41E6lOomaRg2Dk

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/2664-1-0x0000000000A50000-0x0000000000A94000-memory.dmp	family_chaos
behavioral2/files/0x000b000000023b90-6.dat	family_chaos

Chaos family
chaos
Renames multiple (206) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	ransomware DO NOT EXECUTE.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_me.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
760	svchost.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-493223053-2004649691-1575712786-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	svchost.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wo0cuup1p.jpg"	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
3308	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
760	svchost.exe

Suspicious behavior: EnumeratesProcesses 55 IoCs

pid	Process
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
2664	ransomware DO NOT EXECUTE.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	ransomware DO NOT EXECUTE.exe
Token: SeDebugPrivilege	760	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 760	2664	ransomware DO NOT EXECUTE.exe	85
PID 2664 wrote to memory of 760	2664	ransomware DO NOT EXECUTE.exe	85
PID 760 wrote to memory of 3308	760	svchost.exe	92
PID 760 wrote to memory of 3308	760	svchost.exe	92

C:\Users\Admin\AppData\Local\Temp\ransomware DO NOT EXECUTE.exe
"C:\Users\Admin\AppData\Local\Temp\ransomware DO NOT EXECUTE.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2664
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Sets desktop wallpaper using registry
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:760
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_me.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:3308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

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Downloads

C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
248KB

MD5
fe3ac4694dfe15762f09f902f1bf5fd3

SHA1
a3ee731f0e44167c63429f776b30ed1c38204e92

SHA256
1c46cde332afed277986eaae2d50dc288ecd052735235b35962adb21202bb354

SHA512
0669f7328281de827a2bc975f174a985e6b4fbbc4b0cf599b6fea29f92d4633d6c7285049f9c52d39706282a5c1a3c34f2b1fd21e8515ef7fe2dd7a8711045ee

Download Submit
C:\Users\Admin\Documents\read_me.txt

Filesize
129B

MD5
14a5d7b2bc70cb7f275fe6ae9de82684

SHA1
b1a5b5b11928c9c9738f8afdef08bb3a06006f80

SHA256
1ad306c2004f7187a16363e7e45c574f097aa11bd58a2110d3a92e4461443b10

SHA512
aada99b09cc843af8f846d81f79ade118426729fee4a0018c017ca873933c5082412da8458b1e4dbb1ae151b01617a01336461acaf64ea30303250094e93e857

Download Submit
memory/760-14-0x00007FFE174C0000-0x00007FFE17F81000-memory.dmp

Filesize
10.8MB

Download
memory/760-480-0x00007FFE174C0000-0x00007FFE17F81000-memory.dmp

Filesize
10.8MB

Download
memory/2664-0-0x00007FFE174C3000-0x00007FFE174C5000-memory.dmp

Filesize
8KB

Download
memory/2664-1-0x0000000000A50000-0x0000000000A94000-memory.dmp

Filesize
272KB

Download